The sp_opt_querystats system procedure lets you analyze the query plan generated by the Adaptive Server optimizer and the factors that influenced its choice of a query plan. This analysis may help determine if elements in the query or the execution environment affect how Adaptive Server executes the query and its performance. You need not run the selected query to perform the analysis.
sp_opt_querystats output includes:
The query plan generated by showplan
Enabled trace flags and switches
I/O activity for the query generated by set statistics io
Missing statistics found for any of the tables involved in the query
The estimated plan cost calculated by the optimizer
The final plan and cost estimations calculated by the optimizer
The abstract plan for the query
The result of the query if the result set is executed (for example, if noexec is not on)
The logical operator tree for the query generated by set option show
Query execution time generated by set statistics time
After you execute the query, the query execution time generated by set statistics time
